Best Buy Probes CEO Relationship

By

Miguel Bustillo,

Joann S. Lublin and

Ann Zimmerman

Updated April 12, 2012 6:40 p.m. ET

Best Buy Co.'s investigation into the personal conduct of former Chief Executive Brian Dunn is exploring whether he misused company assets in the course of an alleged relationship with a female subordinate, people familiar with the matter said.

The electronics retailer declined to discuss any details of its continuing investigation Thursday, saying it planned a full airing of its findings once the inquiry by the board's audit...